@mixin bar($p: 16px,$w: 1216px){
  display: flex;
  padding: $p;
  max-width: $w;
  margin: auto;
}

@mixin btn($bg: #F6F6F6,$jp: 7px,$ap: 20px,){
  display: inline-block;
  padding: $jp $ap;
  background: $bg;
  border: 1px solid #D9D9D9;
  border-radius: 4px;
  transition: all .3s;
}

@mixin bgImg($w: 0,$h: 0,$img: '',$size: contai){
  display: inline-block;
  width: $w;
  height: $h;
  background: url($img) no-repeat center;
  background-size: $size;
}